WrapAround™ Chain Stays
If you look closely at our chain stays, you will see that they wrap completely around our seat post and are welded directly to the bottom bracket. It's a small, and seemingly trivial detail but it strengthens the entire rear triangle/bottom bracket assembly. This small detail is why our bikes are so prized for their pedaling efficiency. An added benefit is that we can use lighter tubing. Dahon patented technology.